试题与答案

我会选词填空,每词只能填一遍。happy, terribly, too, usu

题型:填空题

题目:

我会选词填空,每词只能填一遍。

happy, terribly, too, usually, easily

1. They ______________ go to the park by bike.
2. I do this work ______________.
3. Mary is a ______________ girl.
4. It's ______________ cold. I don't want to go outside.
5. The weather is ______________ dry.

答案:

1. usually  2. easily  3. happy  4. too  5. terribly

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题型:选择题

将力传感器A固定在光滑水平桌面上,测力端通过轻质水平细绳与滑块相连,滑块放在较长的小车上(靠右端)。如图甲所示,传感器与计算机相连接,可获得力随时间变化的规律。一水平轻质细绳跨过光滑的定滑轮,一端连接小车,另一端系沙桶,整个装置开始处于静止状态。在物体与小车脱离前缓慢向沙桶里倒入细沙,力传感器采集的F-t图象如乙图所示。则:

A.0~2.5s向沙桶里倒入细沙是不均匀的,2.5s后停止倒入细沙

B.0~2.5s小车所受静摩擦力作用的最大值约3.5N;2.5s~4.0s小车所受滑动摩擦力不变

C.0~2.5s小车静止,2.5s~4.0s小车做匀加速运动

D.0~2.5s小车静止,2.5s~4.0 s小车做变加速运动

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